This person has been trying to Facetime me on 4 different occasions:  1/10/14, 1/17/14 (2 times), 1/20/14, and again today 3/20/14 2 times.  I've been ignoring the call since I don't know who the caller is.  Finally today, I was fed up with the calls (I have voicemail and they NEVER leave a message) and text replied "Leave me a message if you know me or stop calling".  The person texted me back saying they never called.  Ridiculous!  I think it's a scam of some type...